13287712709 has 2 divisors, whose sum is σ = 13287712710. Its totient is φ = 13287712708.

The previous prime is 13287712619. The next prime is 13287712729. The reversal of 13287712709 is 90721778231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11966172100 + 1321540609 = 109390^2 + 36353^2 .

It is a cyclic number.

It is not a de Polignac number, because 13287712709 - 2¹⁶ = 13287647173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13287712729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6643856354 + 6643856355.

It is an arithmetic number, because the mean of its divisors is an integer number (6643856355).

Almost surely, 2^13287712709 is an apocalyptic number.

It is an amenable number.

13287712709 is a deficient number, since it is larger than the sum of its proper divisors (1).

13287712709 is an equidigital number, since it uses as much as digits as its factorization.

13287712709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 296352, while the sum is 47.

The spelling of 13287712709 in words is "thirteen billion, two hundred eighty-seven million, seven hundred twelve thousand, seven hundred nine".